linux-kernel - [PATCH -next] hwlat: depends on RING

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Message-ID: <4A3FA899.3040402@oracle.com>
Date:	Mon, 22 Jun 2009 08:51:53 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Stephen Rothwell <sfr@...b.auug.org.au>
CC:	linux-next@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	Jon Masters <jcm@...masters.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH -next] hwlat: depends on RING_BUFFER (build fix)

From: Randy Dunlap <randy.dunlap@...cle.com>

hwlat_detector build fails because it uses ring_buffer interfaces
without depending on RING_BUFFER.

hwlat_detector.c:(.text+0x8d906): undefined reference to `ring_buffer_reset'
hwlat_detector.c:(.text+0x8d98c): undefined reference to `ring_buffer_free'
hwlat_detector.c:(.text+0x8dd16): undefined reference to `__ring_buffer_alloc'
hwlat_detector.c:(.text+0x8df15): undefined reference to `ring_buffer_free'
hwlat_detector.c:(.text+0x8e100): undefined reference to `ring_buffer_write'
hwlat_detector.c:(.text+0x8e239): undefined reference to `ring_buffer_consume'
hwlat_detector.c:(.text+0x8e2ac): undefined reference to `ring_buffer_event_data'

Signed-off-by: Randy Dunlap <randy.dunlap@...cle.com>
Cc: Jon Masters <jcm@...masters.org>
---
 drivers/misc/Kconfig |    1 +
 1 file changed, 1 insertion(+)

--- linux-next-20090622.orig/drivers/misc/Kconfig
+++ linux-next-20090622/drivers/misc/Kconfig
@@ -79,6 +79,7 @@ config IBM_ASM
 config HWLAT_DETECTOR
 	tristate "Testing module to detect hardware-induced latencies"
 	depends on DEBUG_FS
+	depends on RING_BUFFER
 	default m
 	---help---
 	  A simple hardware latency detector. Use this module to detect



-- 
~Randy
LPC 2009, Sept. 23-25, Portland, Oregon
http://linuxplumbersconf.org/2009/
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